Well, after some work and lucky I got the sound working. I got the driver from here but this driver didnīt worked in the first time I installed it. In the second attempt it did work. What changed from the first to the second is because I installed the RealTek ACī97 drivers before and I launched the setup.exe in the compatibility mode with Windows XP. Anyway, this driver may break the boot-up, so I have boot in safety mode and remove it. That is annoying, but the sound working after almost 20 days of silence is good enought to me.

Great and thanks for posting back with how you did it too. This is the info people need.